Railway-car brake.



XII

II A W m a INVENTOR Br I v I I /1TTOR:1"EY

. WIT/#118555:

UNITED STATE,

s PATENT OFFICE.

sE'rH A. oR'oNnor NEW YORK, N. Y.

RAILWAY-CAR BRAKE.

No. 869,425; Specification t Letters Patent. Patented 001;. 29, 1907.

Application filed Jul r 24. 1907- Serial No. 385.347-

, wayC-ar Brakes, of which the following is a specificathe dotted line 2-2 of 1; Fig.

tion.

The invention relates to improvements in brake-shoes; and it consists in the 'novel features hereinafter described, and particularly pointed out in the claims. The brake-shoe of my invention comprisesa cast metal body and a steel or forged metal back-plate, the

two parts being permanently connected together by the casting'of the metal of the body upon portions .of the metal of the back. Brake-shoes consisting of a cast metal body and a steel or forged metal back are well known, and my invention pertains more particularly to a novel construction of the back-plate and a novelunion of the cast metal body thereto, whereby an improved and more durable, safe and'efficient structure is produced. I

tailed description hereinafter presented, reference being had to the accompanying drawings, in which:

Figure 1 is an outer or back elevation of a brake-shoe constructed in accordance withand embodying the invention, Fig. 2 is a central vertical section of same on 3 is a transverse sec- 7 tion of same onthedotted line 3-3 of Fig. 2, and Fig. 4

is a transverse section of the same on the dotted line 4-4 of Fig. 2 I

In the drawings; 10 designates the body-portion of the shoe and 11 the back-plate, said body being, as usual, of cast metal and the back-plate 11 of steel or forged metal and the two'parts being rigidly united by the casting of the castmetal upon portions of the iorgedmietal back.

The back llis in one integral plate extending nearly the entire length of the body 10 and preferably being of the same width as said body. The back 11 is formed at its transverse central portion with a box-loop 12 and.at its end portions with inwardly converging integrai transverse lips 14, while intermediate the box-loop l2 and the lips 14 the plate 11 is formed at convenient points with inwardly extending integral longitudinal loops 15 and inwardly converging cone-shaped flanges 16, said loops and flanges being bent inwardly from the plate and embedded within the body 10; i I The novel features of my invention pertain more particularly to the constructions above and below'the boxloop 12, the latter being fully shown and described in Letterggatent No. 854,985 granted May 28, 1907 to Seth A: Croh and therefore requiringno special description herein.

The plate 11 is at t'hrniddle portion of each end, slit transversely and longitudinally to form the lips 14, which are pressed or bent inwardly on oppositely in- The invention will be fully understood from the declined lines, as shown in Fig. 4, wheroby'a portion of the cast metal may flow in between said lips and form a head of approximately wedge-shape which will socurely lock the plate to the body 10. The cast metal is carried outwardly in line with the lips '14 to form the shoe-lugs'l7, the outer edge portions of which cover the extreme outeredges of the lips 14"or the lines on which said lips join the main plate and are bent inwardly. The lips 14 are opposite to and directly coopemte with each other in securing .the ends of the plate llfand the heads of cast metal between said lips ,xtend transversely of the shoe and onthe proper lines for the lugs 17. I

Between the box-lo0p 12 and pairs of end-lips 14, the plate 11 is equipped with the loops 15 and flanges 16, said loops being formed by longitudinally slitting the plate and depressing .the slit portions inwardly beyond the general plane of the body of the plate, thereby forming the loops 15 which, during the casting of the body 10 upon'the plate, become covered over by the cast metal, as shown in Fig 2 the cast metal where it covers the loops 15 being numbered 18. The loops 15 are of comparatively considerable extent, as shown, so that they and the metal 18 covering them may constitute very efficient locking means extending longitudinally of the shoe and preferably centrally thereof.

Between the inner ends of thcslits for the loops l5 and the box-loop 12 thesurface of the plate 11 'is left plain and exposed to receive the ends of the usual middle brake-head lugs which straddle said loop, and beyond the outer ends of said slits air-adequate surface of said plate is leftexposed to receive the usual end lugs on the brake-head, my purpose being that said slits shall extend continuously substantially throughout all of the available space between the surfaces left I as seats for the middle and end brake-head'lugs, whereby at each side of the box-loop 12 there is a continuous and considerable length of the metal of the plate 11 do pressed inwardly and anchored in the ca st metal.

The flanges 16 are circular and extend inwardly on converging lines, and the cast metal'which flows within the outlines defined by the said flanges forms truncated cone-shaped heads which very efficiently anchor the plate to thebody 10.

It may not be necessary in every instance to employ. both the loops 15 andflanges 16 at both sides of the boxloop 12, but when both loops and flangs are employed no doubt will remain as to the security of the shoe. If the loop 15 at one end of the shoe should be omitted, the number of flanges 16 at that end of the shoe may be increased. The integral longitudinal loops 15 afford, however, very strong securing means, and said loops have an opposite curvature to that of the plate and receive at their outer sides a comparatively long extent of the cast metal. The central portion of the plate 11 issecured to the body 10 by the embedded lips 19.

. Letters-Patent, is: 7

What I claim as my invention and desire to secure by 1. A brakeshoe having a cast-metal body and plate back, said back having at its end a pair of opposite transverse inwardly inclined lips slit therefrom and embedded in the cast metal; substantially as set forth.

A brake-shoe having a cast-metal body and plate back, said back having at its end a pair of opposite transverse inwardly inclined lips slit thereform and embedded in the cast metal, and the cast metal over said lips forming a projecting lug which covers the lines on which said' lips are bent inwardly; substantially as set forth.

A brake-shoe having a cast-metal body and plate back, said back having at each end a pair of opposite transverse inwardly inclined lips slit therefrom and embedded in thecast metal, and the cast metal over said lips forming projecting lugs substantially as set forth.

4. A brake-shoe having a. cast-metal body and plate back, said back having a central apertured box-loop and means at its ends anchoring the plate to said body, and said back being slit longitudinally and continuously throughout substantially all the available space between said box-loop' and 'its end securing means and having the metal at the side of said slit depressed inwardly and.

anchored in the cast metal, said .plate at the ends of said slit being left exposed'to receive the brake-head lugs; substantially as set forth.

5. A brake-shoe having a cast-metal body and, plate back, said back having a central apertur'edbox-loop and means at its ends anchoring the plate to said. body, and said back being slit longitudinally and continuously throughout substantially all the available space bet'ween the upper and lower sides of said box-loopland the re spective end securing means 'at the ends of said plate and having the metal at the side of said slitsdepressed inwardly and anchored in the cast .metal, said plate at the ends of said slits being left exposed to receive the brake-head lugs; substantially as set forth.

:16. A brake-shoe having a cast-metal body and plate back, said back having a central apertured box-loop and means at its ends anchoring the plate to said body, and

said back having longitudinal slits substantially parallel with each other above and below said box-loop and extending continuously throughout substantially ail the available space between said box loop and. the end securing means for the back, and the metal between said slits being depressed inwardly and anchored in the cast metal, and said plate at the ends of saidslits being left exposed to receive the brake-head lugs; substantially as set forth. 7. A brake-shoe having a cast-metal body and plate back, said back having a circular inwardly depressed converging flange embedded within the cast f netal, said cast metal also filling the outline defined within said flange; substantially as set forth.

8. A brake-shoe having a cast-metal body and plate back, said back having an inwardlydepressed continuous converging flange embedded within the cast metal, said cast metal also filling the outline defined within said flange; substantially'as set forth.

9.'A brakeshoe having a cast-metal body and plat back, said back having a central key-receiving loop, means at its ends anchoring the 'plate to said body and between tially-as set forth.

11. A brake-shoe having a cast-metal body and plate back, said back having a central box keyereceiving loop and above and below the same openings at whose dpposite sides the metal is depressed inwardly to form curved converging flanges which are embedded within the cast metal, the said cast metal also filling the outline defined within 'said flanges; substantially as set forth. I

Signed at New York city, in the county of New York and State of New York, this 22nd day of July A. D. 1907.

.- SETH A. CRONE.

Witnesses:

ARTHUR MARION, CHAS. C. GILL. 

